Like "say," the word "speak" refers to thoughts and feelings moving from our more internal spiritual levels to our more external ones -- and ultimately from the Lord, who is in a sense the most internal spiritual level of all. This is generally called "influx" and "perception" in the Writings, meaning they are thoughts and feelings that flow in in a complete way from the Lord, rather than being things we have to think about and figure out. On a number of occasions "speak" and "say" are used together; in these cases "speak" refers more to intellectual instruction in matters of thought and "say" refers more to feelings and affections that flow in directly.

9314. 'And will act as adversary to your adversaries' means that He will turn away all evils from which falsities arise. This is clear from the meaning of 'acting as adversary', when it refers to Jehovah or the Lord, as turning away, dealt with immediately above in 9313; and from the meaning of 'adversaries' as evils from which falsities arise, since those evils in the spiritual sense are 'adversaries' opposed to forms of good from which truths spring. The reason why evils from which falsities arise are meant by 'adversaries' is that falsities arising from evil are meant by 'enemies'; for wherever falsity is the subject in the Word, so too is evil, even as when truth is the subject so too is good, see 683, 793, 801, 2173, 2516, 2712, 3132, 4138 (end), 5138, 5502, 6343, 7945, 8339. From this it is evident that one thing is meant by 'acting as enemy to enemies' and another thing by 'acting as adversary to adversaries', and that the latter is not a repetition that occurs simply to make the subject sound more lofty.